Code No.B2418 OSS authentification timeout


caution
  • If the diagnosis code No. B2418 is set, diagnose the CAN bus lines.
  • When replacing the ECU, always check that the communication circuit is normal.

DIAGNOSIS FUNCTION



JUDGEMENT CRITERIA



PROBABLE CAUSES



  • Malfunction of CAN bus line
  • Malfunction of OSS-ECU
  • Malfunction of KOS-ECU

DIAGNOSIS PROCEDURE


STEP 1. M.U.T.-III CAN bus diagnostics



Q. Is the check result normal?





STEP 2. M.U.T.-III other system diagnosis code



Q. Is the diagnosis code set?





STEP 3. Check whether the diagnosis code is reset.



(1)Erase the diagnosis code.
(2)Turn the power supply mode of the engine switch from OFF to ON (Refer to Forced Power Supply Output ).
(3)Check if the diagnosis code is set.

Q. Is the diagnosis code set?